Make attribute publishing independent from other properties
The attributes have a series of properties that should be orthogonal (not affecting each other).
In an attribute in the factory configuration (global or in entry) attrs/attr there are many properties and these should be orthogonal.
Only the value for a property should affect the behavior advertised for it.
Specifically "publish" should determine whether the attribute is advertised to the glidefactory classad or not
Add a note to the documentation that the classad will contain the factory provided attribute. For non-constant attributes, the final value can change if the Frontend sets the value as well